CN106523092B - The conical surface type eddy flow urea mixing devices of page two - Google Patents
The conical surface type eddy flow urea mixing devices of page two Download PDFInfo
- Publication number
- CN106523092B CN106523092B CN201610926297.3A CN201610926297A CN106523092B CN 106523092 B CN106523092 B CN 106523092B CN 201610926297 A CN201610926297 A CN 201610926297A CN 106523092 B CN106523092 B CN 106523092B
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- cylinder
- partition
- cyclone pipe
- insulating layer
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention belongs to tail gas treatment system of diesel engine equipment technical fields, it is related to a kind of conical surface type eddy flow urea mixing devices of page two, including cylinder, cylinder lumen fixes cyclone pipe, the axis of cyclone pipe and the axis of cylinder are mutually perpendicular to, cylinder, cyclone pipe fixes first partition along cylinder axial ends respectively, second partition, the first partition, cylinder is divided into air inlet cavity by second partition and cyclone pipe, outlet cavity, both the first partition and second partition are respectively facing cylinder both ends and arch upward in arc-shaped, cyclone pipe one end is contacted with cylinder inboard wall, other end installation injection pedestal, it sprays pedestal and is equipped with urea nozzle, drum surface is coated with insulating layer, correspond to injection base position on insulating layer and is equipped with notch.The mixing arrangement can effectively solve the problem of ammonia and tail gas mixed path are shorter, and undercompounding influences vent gas treatment during existing SCR processing tail gas.
Description
Technical field
The invention belongs to tail gas treatment system of diesel engine equipment technical fields, and it is mixed to be related to a kind of conical surface type eddy flow urea of page two
It attaches together and sets.
Background technique
Increasingly strict with diesel engine emissions regulations, exhaust aftertreatment technology is the technical measures that must be used.And SCR
It can satisfy state IV, V and VI discharge standard of state, the basic principle of SCR is will by urea injection system (being commonly called as urea pump)
32.5% concentration aqueous solution of urea atomization after spray into exhaust pipe in mix with motor exhaust, aqueous solution of urea by pyrolysis with
Hydrolysis generates ammonia (NH3), ammonia is by oxynitrides (NOx) harmful in diesel engine vent gas under the effect of the catalyst
It is converted into harmless nitrogen (N2) and water, the top priority of motor exhaust processing technique SCR route is to have tail gas with ammonia mist
The biochemical reaction of hybrid concurrency is imitated, while guaranteeing sufficient temp before entering catalyst.
Summary of the invention
In view of the above-mentioned problems, providing a kind of conical surface type eddy flow urea mixing devices of page two, which can have the present invention
Ammonia and tail gas mixed path are shorter during the existing SCR processing tail gas of effect solution, and undercompounding influences asking for vent gas treatment
Topic.
A kind of technical solution according to the invention: conical surface type eddy flow urea mixing devices of page two, it is characterised in that: including cylinder
Body, the fixed cyclone pipe of cylinder lumen, the axis of cyclone pipe and the axis of cylinder are mutually perpendicular to, and cylinder, cyclone pipe is along cylinder axial direction
First partition, second partition are fixed in both ends respectively, and cylinder is divided into inlet chamber by the first partition, second partition and cyclone pipe
Body, outlet cavity, both the first partition and second partition are respectively facing cylinder both ends and arch upward in arc-shaped, cyclone pipe one end
It is contacted with cylinder inboard wall, other end installation injection pedestal, injection pedestal is equipped with urea nozzle, and drum surface is coated with heat preservation
Layer, injection base position is corresponded on insulating layer and is equipped with notch.
As a further improvement of the present invention, it is connected in the middle part of the first partition, second partition and cyclone pipe.
As a further improvement of the present invention, the tube surfaces that the cyclone pipe is placed in air inlet cavity are uniformly arranged leaf
Piece, strip crevice is equipped between adjacent two panels blade, and the tube surfaces that cyclone pipe is placed in outlet cavity are laid with several circles
Hole.
As a further improvement of the present invention, difference banding in insulating layer both ends is in two end surfaces of cylinder, in the middle part of insulating layer with
Gap is formed between drum surface.
The technical effects of the invention are that: the configuration of the present invention is simple, it is compact to design, it is easy to use, cyclone pipe and partition
The mixing for being divided into swirl shape that can increase ammonia mist in the circuit of gas in cavity is set, so that mixed gas is flowed through chamber intracorporal every
A corner, and the ammonia that urea nozzle ejects dissipates uniformly around with by cyclone pipe back segment hole, makes tail gas and ammonia
It is more fully mixed, be conducive to the processing of tail gas.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that outlet face of the present invention is axially arranged.
Fig. 2 is the structural schematic diagram that air inlet face of the present invention is axially arranged.
Fig. 3 is schematic diagram of internal structure of the invention.
Fig. 4 is schematic diagram of internal structure of the invention.
Specific embodiment
A specific embodiment of the invention is further described with reference to the accompanying drawing.
In Fig. 1 ~ 4, including cylinder 1, injection pedestal 2, insulating layer 3, first partition 4, cyclone pipe 5, second partition 6, air inlet
Cavity 7, outlet cavity 8 etc..
As shown in Fig. 1 ~ 4, the present invention is a kind of conical surface type eddy flow urea mixing devices of page two, including cylinder 1, in cylinder 1
Chamber fixes cyclone pipe 5, and the axis of the axis and cylinder 1 of cyclone pipe 5 is mutually perpendicular to, and cylinder 1, cyclone pipe 5 is along 1 axial ends of cylinder
First partition 4, second partition 6 are fixed respectively, and the first partition 4, second partition 6 and cyclone pipe 5 divide cylinder 1 for inlet chamber
Body 7, outlet cavity 8, both the first partition 4 and second partition 6 are respectively facing 1 both ends of cylinder and arch upward in arc-shaped, eddy flow
5 one end of pipe is contacted with 1 inner wall of cylinder, and other end installation injection pedestal 2, injection pedestal 2 is equipped with urea nozzle, 1 surface of cylinder
It is coated with insulating layer 3, corresponds at injection pedestal 2 on insulating layer 3 and is equipped with notch.
It is connected in the middle part of first partition 4, second partition 6 and cyclone pipe 5.
The tube surfaces that cyclone pipe 5 is placed in air inlet cavity 7 are uniformly arranged blade, are equipped with bar shaped between adjacent two panels blade
Gap, the tube surfaces that cyclone pipe 5 is placed in outlet cavity 8 are laid with several circular holes.
Distinguish banding and form sky between 1 liang of end surfaces of cylinder, 3 middle part of insulating layer and 1 surface of cylinder in 3 both ends of insulating layer
Gap.
The course of work of the invention is as follows: the inlet end of cylinder 1 being connected with the tail gas of automobile engine and (flange can be used
Connection, reducer pipe connection, directly welding or direct extending cavity), it can also connect with other exhaust gas processing devices and (method can be used
Orchid connection, reducer pipe connection, directly welding or direct extending cavity).The tail gas of automobile engine enters inlet chamber by inlet end
In body 7,5 front end of cyclone pipe is entered back into, forms circinate air-flow by 5 front end blade of cyclone pipe, urea is by injection pedestal 2
The axis direction of the parallel cyclone pipe of urea nozzle sprays into, and swirl shape air-flow breaks up urea, while urea volatilizes at high temperature
Ammonia, ammonia are sufficiently mixed with vehicle exhaust, are dissipated by 5 back segment honeycomb hole of cyclone pipe to 8 surrounding of outlet cavity.In outlet chamber
The mixed airflow dissipated in body 8 becomes the parallel airflow outflow for being distributed in cavity cross-section by second partition 6.Mixing after outflow
Gas enters SCR catalyst and is catalyzed.It can choose location arrangements temperature and pressure sensor in chamber outer wall, this amphitypy passes
Sensor can be more accurate control tail gas catalytic treatment.Entire urea mixing device is suitable for various cartridge types, box SCR
Type exhaust aftertreatment product, the invention overall structure size is small, and amplification and diminution appropriate can also be selected according to extraction flow,
It is a kind of economic, efficient, strong applicability urea mixing device.
Claims (3)
1. a kind of conical surface type eddy flow urea mixing devices of page two, it is characterised in that: including cylinder (1), the fixed rotation in cylinder (1) inner cavity
The axis of flow tube (5), the axis and cylinder (1) of cyclone pipe (5) is mutually perpendicular to, cylinder (1), and cyclone pipe (5) is axial along cylinder (1)
First partition (4), second partition (6) are fixed in both ends respectively, and the first partition (4), second partition (6) and cyclone pipe (5) will
Cylinder (1) is divided into air inlet cavity (7), outlet cavity (8), and both the first partition (4) and second partition (6) are respectively facing cylinder
Body (1) both ends are arched upward in arc-shaped, and cyclone pipe (5) one end is contacted with cylinder (1) inner wall, other end installation injection pedestal (2), spray
Pedestal (2) are penetrated equipped with urea nozzle, cylinder (1) surface is coated with insulating layer (3), and injection pedestal is corresponded on insulating layer (3)
(2) notch is equipped at；The tube surfaces that the cyclone pipe (5) is placed in air inlet cavity (7) are uniformly arranged blade, adjacent two panels leaf
Strip crevice is equipped between piece, the tube surfaces that cyclone pipe (5) is placed in outlet cavity (8) are laid with several circular holes.
2. the conical surface type of page two eddy flow urea mixing device as described in claim 1, it is characterised in that: the first partition (4),
It is connected in the middle part of second partition (6) and cyclone pipe (5).
3. the conical surface type of page two eddy flow urea mixing device as described in claim 1, it is characterised in that: insulating layer (3) both ends point
Other banding forms gap between cylinder (1) surface in the middle part of (1) two end surfaces of cylinder, insulating layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926297.3A CN106523092B (en) | 2016-10-24 | 2016-10-24 | The conical surface type eddy flow urea mixing devices of page two |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610926297.3A CN106523092B (en) | 2016-10-24 | 2016-10-24 | The conical surface type eddy flow urea mixing devices of page two |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106523092A CN106523092A (en) | 2017-03-22 |
| CN106523092B true CN106523092B (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610926297.3A Active CN106523092B (en) | 2016-10-24 | 2016-10-24 | The conical surface type eddy flow urea mixing devices of page two |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084028A (en) * | 2017-06-14 | 2017-08-22 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its after-treatment device and application |
| CN107165707A (en) * | 2017-07-27 | 2017-09-15 | 天纳克（苏州）排放系统有限公司 | Engine exhaust post-processes mixing arrangement and its after-treatment device and application |
| CN110056416A (en) * | 2018-01-19 | 2019-07-26 | 天纳克（苏州）排放系统有限公司 | Box-type exhaust post-treatment apparatus of engine |
| CN108194179A (en) * | 2018-03-14 | 2018-06-22 | 潍柴动力股份有限公司 | A kind of post processing air inlet mixing arrangement |
| CN109488426B (en) * | 2019-01-28 | 2023-10-03 | 凯龙高科技股份有限公司 | Double-layer rotational flow vane type urea injection mixing unit |
| CN109826697B (en) * | 2019-03-26 | 2024-01-19 | 平原滤清器有限公司 | Swirl device for diesel engine emission aftertreatment |
| CN110439658A (en) * | 2019-08-12 | 2019-11-12 | 郑州精益达环保科技有限公司 | A kind of six front end SCR urea mixed structure of state |
| US11193412B2 (en) | 2019-09-30 | 2021-12-07 | Faurecia Emissions Control Technologies, Usa, Llc | Automotive exhaust aftertreatment system |
| US11680507B2 (en) * | 2020-11-23 | 2023-06-20 | Faurecia Emissions Control Technologies, Usa, Llc | Inlet flow for high efficiency mixers |
| US11585255B2 (en) * | 2020-11-23 | 2023-02-21 | Faurecia Emissions Control Technologies, Usa, Llc | Crowned inlet baffle for high efficiency mixer |
| US11788454B2 (en) * | 2020-11-23 | 2023-10-17 | Faurecia Emissions Control Technologies, Usa, Llc | Flow diverter for high efficiency mixer |
| CN114458428B (en) * | 2022-01-05 | 2023-07-18 | 潍柴动力股份有限公司 | SCR mixer and engine |
| CN114263518B (en) * | 2022-01-28 | 2023-03-21 | 无锡威孚力达催化净化器有限责任公司 | Dispersion crushing and arc plate diversion type urea mixer |
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| CN106523092A (en) | 2017-03-22 |
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